#include <QCoreApplication>
#include <QDebug>

class F: public QObject
{
    Q_OBJECT
public:
    explicit F(QObject *parent = nullptr) : QObject(parent)
    {
    }
    void myslot(int para)
    {
        qDebug()<<"my slot:"<<para<<endl;
    }
    static void myslot2(int para)
    {
        qDebug()<<"my slot2:"<<para<<endl;
    }
signals:
    void mysig(int);
};

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    F *aaa = new F();
    QObject::connect(aaa, &F::mysig, aaa, &F::myslot);
    QObject::connect(aaa, &F::mysig, [](int x){
        qDebug()<<"my lamda:"<< x << endl;
    });
    QObject::connect(aaa, &F::mysig, &F::myslot2);
    emit aaa->mysig(3);
    return a.exec();
}

#include "main.moc"
